PHP/Language Basics/Reference
Содержание
Assigning a Variable by Reference
<source lang="html4strict">
<html> <head> <title>Assigning a variable by reference</title> </head> <body> <?php $aVariable = 42; $anotherVariable = &$aVariable; $aVariable= 325; print $anotherVariable; ?>
</body>
</html>
</source>
Assign reference to a variable
<source lang="html4strict">
<?php
$value1 = "Hello"; $value2 =& $value1; /* $value1 and $value2 both equal "Hello". */ $value2 = "Goodbye"; /* $value1 and $value2 both equal "Goodbye". */ echo($value1); echo($value2);
?>
</source>
unset reference variables
<source lang="html4strict">
<?php
$a = "AAA";
$b = &$a;
$c = &$b;
print($a . "
");
unset($b);
print($c . "
");
?>
</source>
Variable References Demo
<source lang="html4strict">
<?php
$my_foo = "A";
$my_bar = &$my_foo;
$my_foo = "B";
print($my_bar);
$my_bar = "C";
print($my_foo);
?>
</source>
